Vulnerability · Published Aug 26, 2025 · Assigned by Linux
CVE-2025-38676iommu/amd: Avoid stack buffer overflow from kernel cmdline
High 7.8
In plain English
A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.4%top 63.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Avoid stack buffer overflow from kernel cmdline While the kernel command line is considered trusted in most environments, avoid writing 1 byte past the end of "acpiid" if the "str" argument is maximum length.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.153-1 | DEBIAN-CVE-2025-38676 |
| Debian:12 | linux | 6.1.153-1 | DSA-6009-1 |
| Debian:13 | linux | 6.12.48-1 | DSA-6008-1 |
| Debian:13 | linux | 6.12.48-1 | DEBIAN-CVE-2025-38676 |
| Debian:14 | linux | 6.16.5-1 | DEBIAN-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux | 5.15.0-163.173 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux | 6.8.0-100.100 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1097.104 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1046.49 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1046.49~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1101.110 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1046.52 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1051.57~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1102.111.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-azure-fde | 6.8.0-1046.53 | UBUNTU-CVE-2025-38676 |
| Ubuntu:25.10 | linux-azure-fde | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.8 | 6.8.0-1046.53~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-azure-nvidia | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1097.106 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1047.50 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1047.50~22.04.2 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1093.99 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1043.48 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1080.88 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1030.33 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-100.100~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1091.94 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1044.44 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1044.44~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-intel | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1092.98 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1089.94 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-163.173 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-100.100.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-100.100.1~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1092.93 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1046.49 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1046.49~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1046.49.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1049.49 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra | 6.8.0-1020.20 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1038.38 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1094.100 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1043.44 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1043.44~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1091.94 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1047.51 | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | 6.8.0-100.100~22.04.1 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2025-38676 |
| Ubuntu:24.04:LTS | linux-xilinx | 6.8.0-1023.24 | UBUNTU-CVE-2025-38676 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1061.65 | UBUNTU-CVE-2025-38676 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | f2a5ec7f7b28f9b9cd5fac232ff51019a7f7b9e9 – before a732502bf3bbe859613b6d7b2b0313b11f0474acc513043e0afe6a8ba79d00af358655afabb576d2 – before 0ad8509b468fa1058f4f400a1829f29e4ccc4de82ae19ac3ea82a5b87a81c10adbb497c9e58bdd60 – before 9ff52d3af0ef286535749e14e3fe9eceb39a8349b6b26d86c61c441144c72f842f7469bb686e1211 – before 8f80c633cba144f721d38d9380f23d23ab7db10eb6b26d86c61c441144c72f842f7469bb686e1211 – before 4bdb0f78bddbfa77d3ab458a21dd9cec495d317ab6b26d86c61c441144c72f842f7469bb686e1211 – before 736db11c86f03e717fc4bf771d05efdf10d23acbb6b26d86c61c441144c72f842f7469bb686e1211 – before 8503d0fcb1086a7cfe26df67ca4bd9bd9e99bdec5e97dc748d13fad582136ba0c8cec215c7aeeb17 |
| Linux | Linux | 6.3 |
References
- https://git.kernel.org/stable/c/a732502bf3bbe859613b6d7b2b0313b11f0474ac
- https://git.kernel.org/stable/c/0ad8509b468fa1058f4f400a1829f29e4ccc4de8
- https://git.kernel.org/stable/c/9ff52d3af0ef286535749e14e3fe9eceb39a8349
- https://git.kernel.org/stable/c/8f80c633cba144f721d38d9380f23d23ab7db10e
- https://git.kernel.org/stable/c/4bdb0f78bddbfa77d3ab458a21dd9cec495d317a
- https://git.kernel.org/stable/c/736db11c86f03e717fc4bf771d05efdf10d23acb
- https://git.kernel.org/stable/c/8503d0fcb1086a7cfe26df67ca4bd9bd9e99bdec
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html